Attachment for hydrocarbon-motors.



APPLICATIONv FILED NOV- 9, 19H.

Patented Oct. 10,1916;

76 4 (JIM tmrrnn STATES PATENT orrios.

WALTER W. HARDING, OF ALLSTON; MASSACHUSETTS, ASSIGNOR TO J'. RUSH GREEN, OF SOMERVILLE, MASSACHUSETTS.

ATTACHMENT FOR. HYDROCARBON-MOTORS.

Specification of Letters Patent.

Application filed November 9, 1914. 7 Serial N 0. 871,089.

To all whom it may concern:

Be it known that I, WALTER W. HARDING,

a citizen of the United States, residing at Allston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Attachments for Hydrocarbon-Motors; and I do hereby declare the following to be a full, clear,'and

exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. I

The present invention relates to hydrocarbon motors and more particularly 'to attachmentslfor. furnishing an auxiliary supply of air and for locking the supply of gas cut off from the motor. I

Many of the carbureters at present employed for supplying gaseous mixture to hydro-carbon motors are defective in that the character or quality of the mixture .varies with different motorspeedsv and throttle openings. As a consequence, the motor will knock on heavy grades, lose power, and miss fire, and a large amount of fuel will be Wasted. These objectionable results accompany the use not only ofcarbureters having no auxiliary air supplying devices, but also of those carburetors in 'which, owing to faulty construction or improper design, the auxiliary air supplying devices fail to operate regularly and effectively to maintain the mixture substantially uniform.

It is one of the objects of the present invention to provide an auxiliary air supplying attachment for hydro-carbon motors which shall be simple in construction and certain and eflicient in operation to maintain the gaseous mixture of substantially uniform quality, irrespective of the speed of the motor or the extent of the throttlesame model or manufacture. As a consequence the unauthorizedstarting and use of automobiles is of common occurrence.

- It s one of the ob ects of the present 1nvention to provide a simple and inexpenslve attachment for hydro-carbon motors which.

may be easily and conveniently secured to the manifold or carbureter and which is controlled by its special and individual key to cut off the supply of gaseous mixture to the motor, thus effectively preventingv the unauthorized use of the automobile.

A further object of the present invention is to provide an attachment embodying an auxiliary air supply and a gas lock especially designed to be secured between the .carbureter and the manifold of the motor of a well-known make of automobile.

WV th these objects in view, the present invention consists in the attachment hereinafter described and more particularly defined in the claims.

In the accompanying drawings which illustrate what is now considered the preferred form of the present invention, Figure 1 is a top plan view of the specific form of my attachment designed for use upon the motors of Ford automobiles, showing the manner of securing the attachment between the flanges of the carbureter and the manifold; Fig. 2 is a rear elevation of the same with the gas valve open; and Fig. 3 is a.

vertical section showing the internal construction of my attachment and with the gas valve closed.

In the specific embodiment of the present invention illustrated in the drawings, the body of the attachment consists of a casting comprising a plate-like body portion 1, having flat opposite faces, the lockcontaining boss 2, the circular valve chamber boss 3, and air intake pipe 4. The body portion is provided with a gas passage 5 and the bolt holes 6, and is adapted to be clamped between the flange 7 of the carbureter 8 and the flange 9 of the gas manifold 10 by means of bolts 11 passing through said flanges and the bolt holes, the gas passage 5 then registering with the gas passages in the carbureter and manifold. p

The valve chamber boss 3 is counter-bored to form the valve chamber 12, having the conical valve seat 13 at its bottom. An air intake opening 14. in the valve seat at the apex thereof communicates with the air in- Patented. Oct. 10, 1916.

valve 18, having the stem 19.

take pipe 4, while an air outlet opening 15 adjacent the upper margin of the valve seat is connected with the gas passage 5 by means oi the air supply passage 16m The passage of air from the air inlet opening let to the air outlet opening 15 is controlled by an air The upper end of the valve stem is guided by the re cess 20in the screw plug or cap which closes the upper end of the hive chamberiiQ.

The tendency of the valye under the action of gravity to remain in contact with the valve seat, and thus cut oil communica: tion from air inlet opening ii to air outlet opening 15, is augmented by the spring 22 one end' of which engages the valve 18 and the other the screw cap 21; By adjusting the screw cap dowi-iwardly or upwardly the force of spring 22 may beincreased or diminished as may be required the cap being held in adjusted position by means of the locking spring 23 adapted to enter one or another of the notches or flutings 2% formed on the screw cap 21.

The air valve is raised from its seat by the so-called suction of the motor extending from the gas passage 5 through the suction passage 26' and opening 27 and into the valve chamber'lQ above the valve 18.

-The locking device illustrated in the drawings comprises the damper or butterfly valve30, pivotally mounted in the gas pas- 5 in the body 1 of the attachment. The shank or spindle 31 of the valve is extended through the locltwhich is located in the boss 2, and is adapted to receive the key'32 which is freely renio able when the valve is closed, but which in the preferred construction is securely held in place when the valve is open in the normal operation of the motor.

It will readily be seen that my improved attachment is easily and quickly secured in place it being necessary only to disconnect the carburetor from the nix-unfold move them apart a short distance, insert the body 1 between the manifold and carburetor, and then clamp the flanges oi manifold and.

bureter firmly against the body by means of bolts passing through the registering bol holes in flanges and body. Preferably "he.

. x 1 A. i i air intake p1pe 3 will be connected wit a picket or stove upon the exhaust pipe so that the entering air shall be Warm.

lVhen the operator Wishes to start 12-1% rhotor, he raises the bonnet an n l" T 32 the lock and, turns t l r open position leaving the it whe e it securely held then be set in operation. runni g; the valve 18 to ply regulated uuanti air to the gaseous mixture wi fold, the quantity of auxiliary air supplied through the valve varying With the speed at which the motor is running and with air with the gas, and oil -,and vaporizing; any mini; e

. gilyino s 'btfilll, or intales changes in the throttle opening. Durins: the running; of the motor a vacuum is created in the manifold which varies with different motor speeds and with different throttl openings. When the vacuum in the manifold is relatively low the pressure of the exterior air is insulticient to overcome the weight of the valve 18 supplemented by the force of the spring 522 so that the valve remains in engagement with its seat 13 and no auxiliary air is admitted to the interior of the manifold. ll'hen the vacuum in the manifold increases to a certain degree the pressure of the exterior air raises the valve in from its seat permitting an auxiliary supply of air to flow from the intake pipe 2 through the inlet opening ll across the face of the valve and the valve seat 13, through inlet opening 15 and. passage 16 into the passage 5 where it mingles with the overrich "gaseous mixture passing through manitoldirom the carburetor and dilutes the mixture. The distance which the valve is raised from its seat varies with the de ree of thevacuum within the manifold so that the quantity of auxiliary air admitted through the valve opening to the interior the manifold is correspondingly varied. The valve. x therefore, regulates .ai'ztoinatically the quantity of auxiliary air delivered to the gaseous mixture within the manifold. v

When the operator wishes to leave his car without danger of its being stolen or used he raises the bonnet and turns the hey which'closes gas valve 30, and then by removing the key eti'ectivcly prevents the stai ing or the motor-{as he has i possessioi'i the only key capable of o iing the .valve.

it will be observed that th the air inlet opening; passes face of the valve 18 to the 15 and not or I or guidino' surface of l v chain :er, mus a c in [on y am:

"it which y enter "a. 1 also ohsc.

any air the gas right angles to tne direction. of tie. gas, thus insuring thorough inii. ctiyely ore,

which be carried l3 fol l ins described. What is new considered to be the preferred form of the pres- I cut invention, and indicated its mode of opbination, a valve chamber provided with a valve seat and with an air inlet opening and an air outlet opening adjacent the seat, and also provided with a suction opening, a valve located in the chamber between the suction opening and the seat, and "at all times preventing the passage of air from the air inlet opening to the suction opening, and COIIHQCUODS from the suctlon and the outlet openings to the intake of the motor, substantially as described.

2. An auxiliary ai'r supplying attachment for hydro-carbon motors comprising a body having fiat opposite faces and adapted to be secured between the manifold and the carbureter of the motor,'and having a gas pas:

sage to conduct gas from the carbureter to the manifold, a valve chamber provided with a valve seat, an air inlet opening and an ainoutlet opening adjacent the seat, a suction opening, connections from the air outlet and the suction openings to the gas passage, and from the air inlet opening to J theexternal air, and avalve locatedin the valve chamber between the suction opening and the air inlet and outlet openings, an

preventing at all times the passage of air fromthe air inlet to the suction opening, substantially as described.

3. An auxiliary air supplying attachment for hydro-carbon motors, having, in combination, a valve chamber provided with a conical valve seat, an air inlet opening at the apex of the seat, an air outlet opening adjacent the outer margin of the seat, a sue? tion opening, and connections frornthe air outlet and the suction openings to theintake of the motor, a valve in the chamber between the suction opening and the air inlet and outlet openings, and provided with a valve stem, a screw'cap closing the yalve chamber and having a recess to receive-and guide the valve stem, a spring betweenithe valve and the cap normally tending to hold manifold and the carbureter, a valve located in the gas passage, a cylinder lock for locking thevalx'e in closed'p osition, a. pivoted spindle upon which the vtilve is rigidly secured, the spindle extending through the body to form the rotary lock cylinder and provided in its outer end with a key-receiving slot, and a key for the lock arranged to enter the slotted end of the spindle for opening and closing the valve, the key being removable only when the valve is locked in closed position.

5. An attachment for manifolds for hydro-carbon motors comprising a fiat, plate-like body adapted to be clamped betweenthe flanges of the manifold and the carbureter, and provided with a gas passage for conducting gas from the carbureter tothe manifold, and also having a valve. chamber provided with a valve. seat and with air inlet and air outlet openings adjacent the seat, and with a suction opening, connections from the air outlet and the suction openings to the gas passage and air valve located inthe chamber between the suction opening and the air'inlet and outlet'open ings, and a gasrvalve pivotally'mounted in the gas passage, a lock mounted in the bgdy, and a removable key for locking the valve in closed position, substantially as described. 

